1 SQUASHFS 4.0 - A squashed read-only filesystem for Linux 2 3 Copyright 2002-2009 Phillip Lougher <phillip (a] lougher.demon.co.uk> 4 5 Released under the GPL licence (version 2 or later). 6 7 Welcome to Squashfs 4.0. This is an initial tools only release to 8 support users of the 2.6.29 kernel, following the mainlining of Squashfs 9 earlier this year. 10 11 Later releases will probably contain kernel patches supporting 4.0 12 layouts for earlier kernels. 13 14 New Mksquashfs options 15 ---------------------- 16 17 Mksquashfs now supports pseudo files, these allow fake directories, character 18 and block devices to be specified and added to the Squashfs filesystem being 19 built, rather than requiring them to be present in the source directories. 20 This, for example, allows device nodes to be added to the filesystem without 21 requiring root access. 22 23 Two options are supported, -p allows one pseudo file to be specified on the 24 command line, and -pf allows a pseudo file to be specified containing a 25 list of pseduo definitions, one per line. 26 27 Pseudo device nodes are specified using 7 arguments 28 29 Filename type mode uid gid major minor 30 31 Where type is either 32 b - for block devices, and 33 c - for character devices 34 35 mode is the octal mode specifier, similar to that expected by chmod. 36 37 Uid and gid can be either specified as a decimal number, or by name. 38 39 For example: 40 41 /dev/chr_dev c 666 root root 100 1 42 /dev/blk_dev b 444 0 0 200 200 43 44 Directories are specified using 5 arguments 45 46 Filename type mode uid gid 47 48 Where type is d. 49
